JPH0525048B2 - - Google Patents

Info

Publication number
JPH0525048B2
JPH0525048B2 JP14255585A JP14255585A JPH0525048B2 JP H0525048 B2 JPH0525048 B2 JP H0525048B2 JP 14255585 A JP14255585 A JP 14255585A JP 14255585 A JP14255585 A JP 14255585A JP H0525048 B2 JPH0525048 B2 JP H0525048B2
Authority
JP
Japan
Prior art keywords
magnetic field
excavator
distance
detection device
target line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP14255585A
Other languages
English (en)
Japanese (ja)
Other versions
JPS625118A (ja
Inventor
Takeshi Murayama
Kojiro Ogata
Kyoshi Nagasawa
Naoki Mitsuyanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP14255585A priority Critical patent/JPS625118A/ja
Publication of JPS625118A publication Critical patent/JPS625118A/ja
Publication of JPH0525048B2 publication Critical patent/JPH0525048B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP14255585A 1985-07-01 1985-07-01 掘進機の位置検出装置 Granted JPS625118A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14255585A JPS625118A (ja) 1985-07-01 1985-07-01 掘進機の位置検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14255585A JPS625118A (ja) 1985-07-01 1985-07-01 掘進機の位置検出装置

Publications (2)

Publication Number Publication Date
JPS625118A JPS625118A (ja) 1987-01-12
JPH0525048B2 true JPH0525048B2 (enrdf_load_stackoverflow) 1993-04-09

Family

ID=15318061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14255585A Granted JPS625118A (ja) 1985-07-01 1985-07-01 掘進機の位置検出装置

Country Status (1)

Country Link
JP (1) JPS625118A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0335114A (ja) * 1989-06-30 1991-02-15 Komatsu Ltd 地下掘進機械の位置計測装置

Also Published As

Publication number Publication date
JPS625118A (ja) 1987-01-12

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